THREAT REMOVAL

Bucbi Ransomware Revived, Distributed via Brute-Forcing RDP Accounts

Bucbi-ransomware-original-ransom-note-palo-alto-stforumSecurity researchers at Palo Alto Networks disclosed that an old ransomware family – Bucbi ransomware – has been just revived after 2 years of silence. The Bucbi threat was discovered in 2014, and it hasn’t been registered active since then. Not only it has been revived but it has also been updated. Above, you see the original ransom note used by Bucbi in 2014’s attacks.

Threat Summary

NameBucbi Ransomware
TypeRansomware
Short DescriptionBucbi ransomware was first spotted in 2014, but has been just revived.
Symptoms The victim’s files are inaccessible and encrypted.
Distribution MethodVia brute-forcing RDP accounts.
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Bucbi Ransomware: Current Distribution

When it was first reported, Bucbi was spread via HTTP downloads and exploit kits. Now a new distribution technique has been adopted by its authors – delivery via brute-forcing RDP accounts on Internet-facing Windows servers. However, Bucbi’s code is also modified – it no longer needs Internet connection to propagate.

Learn More about Brute Force Attacks

Who Is Behind Bucbi Ransomware?

According to the ransom notes dropped by Bucbi, it’s operated by a far-right Ukrainian nationalist political party called Ukrainian Right Sector. According to Wikipedia, Right Sector has originated in 2014 as a paramilitary confederation at the Euromaidan revolt in Kiev. The group which opposes Russia became a political party on 22 March 2014. In 2014, Right Sector claimed to have approximately 10,000 members.

As for Bucbi’s recent attacks, it’s still not known whether the information about Right Sector provided in the ransom notes is accurate or falsified. However, multiple Russian identifiers have been discovered in the latest infections, which contradict to the ransomware authors’ claims of Ukrainian origin.

Bucbi Ransomware: Technical Overview

As already mentioned, Bucbi’s latest distribution depends on brute-forcing techniques and open RDP (Remote Desktop Protocol) ports. Palo Alto researchers believe that the threat actors may have used a tool named RDP Brute (Coded by z668). This is a list of the IP addresses associated with Bucbi’s latest attacks at the end of March 2016:

  • 184.197.69
  • 44.191.251
  • 117.151.236
  • 161.40.11
  • 101.31.126

Researchers also believe that the attackers first targeted PoS devices but later changed their tactics to monetize their malicious attempts. Palo Alto researchers have shared some of the usernames specific to PoS systems:

Some of the usernames specific to PoS systems include strings such as BPOS, FuturePoS, KahalaPoS, POS, SALES, Staff, and HelpAssistant.

More technical details of the attack find here: Palo Alto Networks Research Center

In conclusion, the latest variant of Bucbi ransomware implies to have been employed by Right Sector. If this claim is truthful, this would mean that the Ukranian far-right party has entered cybercrime, possibly to fund their cause, Palo Alto researchers write. However:

Attribution of this particular attack is difficult as there simply isn’t enough evidence to conclusively determine who is behind it. Various conflicting evidence make it impossible to say for sure. However, what is clear is that attackers are shifting tactics in how ransomware is deployed, and ensuring their malware is constantly being updated to deter defenders.

Bucbi Ransomware Removal & Decryption

Bucbi’s cryptography is still being investigated. More details will be available soon. It’s known that after the encryption process is finished, a README.txt will be placed on the user’s desktop:

Bucbi-txt-file-palo-alto-stforum

The BitCoin address mentioned in the above screenshot has a single payment of 0.00896 BTC at the time of writing. This payment, being so low in value, was likely a test transaction used. The email address of ‘dopomoga.rs@gmail.com’ has ties with the Ukrainian Right Sector in a number of external publications […].

If you have been infected by Bucbi ransomware, consider following the steps below. However, since the threat is still being analyzed, there is no guarantee that encrypted files will be decrypted via any alternative methods.

Milena Dimitrova

Milena Dimitrova

An inspired writer and content manager who has been with SensorsTechForum since the beginning. Focused on user privacy and malware development, she strongly believes in a world where cybersecurity plays a central role. If common sense makes no sense, she will be there to take notes. Those notes may later turn into articles! Follow Milena @Milenyim

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Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

How to Remove Bucbi Ransomware from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Bucbi Ransomware

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R


2. The "Run" Window will appear. In it, type "msconfig" and click OK.


3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


4. When prompted, click on "Restart" to go into Safe Mode.


5. You can recognise Safe Mode by the words written on the corners of your screen.


Step 2: Uninstall Bucbi Ransomware and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


2. In the field type in "appwiz.cpl" and press ENTER.


3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.


Step 3: Clean any registries, created by Bucbi Ransomware on your computer.

The usually targeted registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by Bucbi Ransomware there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.


2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.


3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for Bucbi Ransomware with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.


It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.


2. After you have installed SpyHunter, wait for it to update automatically.

SpyHunter5-update-2018


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

SpyHunter5-Free-Scan-2018


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

SpyHunter-5-Free-Scan-Next-2018

If any threats have been removed, it is highly recommended to restart your PC.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

Get rid of Bucbi Ransomware from Mac OS X.


Step 1: Uninstall Bucbi Ransomware and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to Bucbi Ransomware:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Bucbi Ransomware. If you find it, right-click on the app and select “Move to Trash”.


6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Bucbi Ransomware. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove Bucbi Ransomware via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as Bucbi Ransomware. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Step 2: Scan for and remove malware from your Mac

When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove Bucbi Ransomware from Google Chrome.


Step 1: Start Google Chrome and open the drop menu


Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"


Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.


Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Erase Bucbi Ransomware from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window


Step 2: Select the "Add-ons" icon from the menu.


Step 3: Select the unwanted extension and click "Remove"


Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Uninstall Bucbi Ransomware from Microsoft Edge.


Step 1: Start Edge browser.


Step 2: Open the drop menu by clicking on the icon at the top right corner.


Step 3: From the drop menu select "Extensions".


Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.


Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove Bucbi Ransomware from Safari.


Step 1: Start the Safari app.


Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.


Step 3: From the menu, click on "Preferences".

stf-safari preferences


Step 4: After that, select the 'Extensions' Tab.

stf-safari-extensions


Step 5: Click once on the extension you want to remove.


Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Bucbi Ransomware will be removed.


How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Eliminate Bucbi Ransomware from Internet Explorer.


Step 1: Start Internet Explorer.


Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'


Step 3: In the 'Manage Add-ons' window.


Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.


Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.


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